Bright, clear, light, brilliant, sparkling, sunny, visible, illuminated, distinct, radiant
The opposite of dark is "light."
The opposite of dark matter is visible matter.
Dark, or heavy.
An antonym is a word that means the OPPOSITE of another word. The word that means the opposite of light is dark.
dark.
There is no opposite of dark energy in the sense that there exists something that is the exact opposite of dark energy. Dark energy speeds the rate of expansion of space, even empty space, and gravity, mass, or matter causes the opposite in that it causes a decrease in the rate of expansion of space in areas that have matter.
dark
hidden dark
blekakka
The word "opposite" is ill-defined here. Also, we really don't know what dark matter is, so it's kind of pointless to talk about its "opposite", whatever that is supposed to mean.
The opposite to gray is gray dark gray is light gray ;)
The opposite of bright (color, shine) could be dark The opposite of bright (light) could be dim, dull, or low. The opposite of bright (day, disposition) could be gloomy. The opposite of bright (idiom - clever) could be dull, or unintelligent.